The Guardian – Justine Greening says nationwide rollout of Oyster-style technology and fewer on-train staff could help reduce subsidyPlans for smart ticketing for rail passengers across the UK and the prospect of even higher fares at peak times were unveiled by the government as it looks to save billions of pounds by radically altering the way the rail system is run.Justine Greening, transport secretary, confirmed on Thursday that she wanted the industry to deliver savings of £3.5bn a year by 2019. Greening said passengers and taxpayers were picking up the tab for the